1/*
 2 *  This file contains work-arounds for many known SD/MMC
 3 *  and SDIO hardware bugs.
 4 *
 5 *  Copyright (c) 2011 Andrei Warkentin <andreiw@motorola.com>
 6 *  Copyright (c) 2011 Pierre Tardy <tardyp@gmail.com>
 7 *  Inspired from pci fixup code:
 8 *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
 9 *
10 */
11
12#include <linux/types.h>
13#include <linux/kernel.h>
14#include <linux/mmc/card.h>
15
16#ifndef SDIO_VENDOR_ID_TI
17#define SDIO_VENDOR_ID_TI		0x0097
18#endif
19
20#ifndef SDIO_DEVICE_ID_TI_WL1271
21#define SDIO_DEVICE_ID_TI_WL1271	0x4076
22#endif
23
24/*
25 * This hook just adds a quirk for all sdio devices
26 */
27static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
28{
29	if (mmc_card_sdio(card))
30		card->quirks |= data;
31}
32
33static const struct mmc_fixup mmc_fixup_methods[] = {
34	/* by default sdio devices are considered CLK_GATING broken */
35	/* good cards will be whitelisted as they are tested */
36	SDIO_FIXUP(SDIO_ANY_ID, SDIO_ANY_ID,
37		   add_quirk_for_sdio_devices,
38		   MMC_QUIRK_BROKEN_CLK_GATING),
39
40	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
41		   remove_quirk, MMC_QUIRK_BROKEN_CLK_GATING),
42
43	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
44		   add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
45
46	SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
47		   add_quirk, MMC_QUIRK_DISABLE_CD),
48
49	END_FIXUP
50};
51
52void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table)
53{
54	const struct mmc_fixup *f;
55	u64 rev = cid_rev_card(card);
56
57	/* Non-core specific workarounds. */
58	if (!table)
59		table = mmc_fixup_methods;
60
61	for (f = table; f->vendor_fixup; f++) {
62		if ((f->manfid == CID_MANFID_ANY ||
63		     f->manfid == card->cid.manfid) &&
64		    (f->oemid == CID_OEMID_ANY ||
65		     f->oemid == card->cid.oemid) &&
66		    (f->name == CID_NAME_ANY ||
67		     !strncmp(f->name, card->cid.prod_name,
68			      sizeof(card->cid.prod_name))) &&
69		    (f->cis_vendor == card->cis.vendor ||
70		     f->cis_vendor == (u16) SDIO_ANY_ID) &&
71		    (f->cis_device == card->cis.device ||
72		     f->cis_device == (u16) SDIO_ANY_ID) &&
73		    rev >= f->rev_start && rev <= f->rev_end) {
74			dev_dbg(&card->dev, "calling %pF\n", f->vendor_fixup);
75			f->vendor_fixup(card, f->data);
76		}
77	}
78}
79EXPORT_SYMBOL(mmc_fixup_device);